Mid-July and no ID-11 yet. Based on Mirko's comments about updated regulations, I'll be curious to see whether the new version still comes in two bags or has now been combined into one.
It is in sock at Ilford/Harman, so it is probably a case of when the next shipment of Ilford materials arrives in North America.
This was my experience too. Mixed up fresh works great for a week or so then goes super active.
I’ve seen that formula of D-76H, also read about a D-76d which adds boric acid to the original formula and supposed to do the same thing, stop the PH creep. I may move forward with these formulas if ID-11 stays unavailable or comes back not the same as before.
Kodak D-76 is no longer the original published formula, it was changed with increased Borax and the addition of Boric acid. The labelling on Kodak Australia Ltd D=76 packaging listed the percentage contents, these indicate the probable version in production.
Chemical |
D-76 |
D-76 (Australia Ltd) |
D-76d |
Metol |
2g |
2g |
2g |
Sodium Sulphite (anhyd) |
100g |
100g |
100g |
Hydroquinone |
5g |
5g |
5g |
Borax |
2g |
4g |
8g |
Boric Acid |
0 |
2g |
8g |
Water to |
1 litre |
1 litre |
1 litre |
The 2015 Kodak Alaris MSDS shows the formula changed again, with no Borax or Boric Acid. An Ilford Patent shows ID-11 as a reference developer but with the Borax increased from 2g to 3g
When D-76 & ID-11, and numerous identical versions from other manufacturers, were introduced, they were designed for replenished use. As Lachlan mentions in post #93 the developer needs time after mixing, before use, and it also needs ripening, often with the addition of some older developer, or just through use, this allows Bromide to build up slightly. Once ripened D-76/ID-11 give their best results, and can be replenished for quite a significant throughput, but ultimately it collapses, primarily due to Bromide building up to levels that inhibit the Metol.
As Lachlan mentioned a PQ version of ID-11/D76 is far more stable and in fact Ilford introduced Autophe a PQ variant as a high volume fine grain film developer for photofinishing labs. This could use top up replenishment, unlike ID-11/D-76 which used bleed replenishment to help keep the Bromide level lower.
However small scale users began using D-76/ID-11 dilute, in the 1970s, so both companies published times for 1+1 and 1+3. It's likely the buffering was change for greater stability, particularly at1+3.
Ian